@@ -268,7 +268,7 @@ error:

-static int replace_len(char* match, int nmatch, regmatch_t* pmatch,

+static int replace_len(const char* match, int nmatch, regmatch_t* pmatch,

 					struct subst_expr* se, struct sip_msg* msg)

 {

 	int r;

@@ -314,7 +314,7 @@ static int replace_len(char* match, int nmatch, regmatch_t* pmatch,

 /* rpl.s will be alloc'ed with the proper size & rpl.len set

  * returns 0 on success, <0 on error*/

-static int replace_build(char* match, int nmatch, regmatch_t* pmatch,

+static int replace_build(const char* match, int nmatch, regmatch_t* pmatch,

 					struct subst_expr* se, struct sip_msg* msg, str* rpl)

 {

 	int r;

@@ -386,12 +386,12 @@ error:

 /* WARNING: input must be 0 terminated! */

-struct replace_lst* subst_run(struct subst_expr* se, char* input,

+struct replace_lst* subst_run(struct subst_expr* se, const char* input,

 								struct sip_msg* msg)

 {

 	struct replace_lst *head;

 	struct replace_lst **crt;

-	char *p;

+	const char *p;

 	int r;

 	regmatch_t* pmatch;

 	int nmatch;

@@ -453,16 +453,16 @@ error:

 /* returns the substitution result in a str, input must be 0 term

  *  0 on no match or malloc error */ 

-str* subst_str(char *input, struct sip_msg* msg, struct subst_expr* se)

+str* subst_str(const char *input, struct sip_msg* msg, struct subst_expr* se)

 {

 	str* res;

 	struct replace_lst *lst;

 	struct replace_lst* l;

 	int len;

 	int size;

-	char* p;

+	const char* p;

 	char* dest;

-	char* end;

+	const char* end;

 	/* compute the len */

@@ -73,9 +73,9 @@ struct replace_lst{

 void subst_expr_free(struct subst_expr* se);

 void replace_lst_free(struct replace_lst* l);

 struct subst_expr*  subst_parser(str* subst);

-struct replace_lst* subst_run( struct subst_expr* se, char* input, 

+struct replace_lst* subst_run( struct subst_expr* se, const char* input, 

 		                       struct sip_msg* msg);

-str* subst_str(char* input, struct sip_msg* msg, struct subst_expr* se);

+str* subst_str(const char* input, struct sip_msg* msg, struct subst_expr* se);